sun parlour vs solarium

sun parlour and solarium both are nouns.

Word	Noun	Adjective	Verb	Adverb
sun parlour	Yes	No	No	No
solarium	Yes	No	No	No

As nouns, sun parlour and solarium are synonyms defined as:

sun parlour and solarium: a room enclosed largely with glass and affording exposure to the sun

Other synonyms of sun parlour include sun lounge, sun parlor, sun porch, sunporch, sunroom.

sun parlour (noun)	solarium (noun)
a room enclosed largely with glass and affording exposure to the sun	a room enclosed largely with glass and affording exposure to the sun